Dec.7 (GMM) Red Bull designer Adrian Newey has confirmed reports the successor to his title-winning RB8 single seater will be launched slightly late.

Adrian Newey, Red Bull Racing Chief Technical Officer
Adrian Newey, Red Bull Racing Chief Technical Officer

Photo by: xpb.cc

Red Bull team boss Christian Horner admitted this week that progress with the Renault-powered RB9 is running "a little late".

"We will be ready later than we would like," Newey is now quoted by Spain's El Mundo Deportivo.

"We had to focus until the last moment on development of the RB8 in order to retain the two titles.

"But it's not a serious problem, because the RB9 is an evolution of the current (RB8) car."